The Clinical Nurse Specialist (ISC) is an advanced practice nurse with a postgraduate training (clinical masters). The ISC is the expert clinician in the assessment and care planning area of expertise, has a thorough knowledge of diagnostic and treatment of their patients, is able to develop their interventions according to the most recent indications of ' Evidence-based nursing . The ISC works with other nurses , encouraging growth and maintenance of nursing practice, to improve outcomes of patient care and build new care strategies.